2 Mamm. 
II. MAMMALIA. 
INTRODUCTION. 
The most important discovery of the year, so far as systematic work 
is concerned, is undoubtedly the relationship between Zeuglodonts and the 
Creodont Carnivora, as described by Fraas on the evidence of Egyptian 
material. Next, perhaps, in importance is the reference by Andrews of 
Arsinoetherium to a distinct group of Ungulates — the Barypoda. The 
rediscovery by Goeldi of the S. American Rodent Dinomys is also an 
event of first-rate importance ; as is also the description by Thomas of a 
new genus {Hylochoerus) of African Swine. Broom's researches into the 
relationships between the jaws and limbs of Theriodont lieptiles and of 
Mammals are likewise of the highest importance ; while it may be permis- 
sible also to allude to the Recorder's observations on the phylogeny of 
Arab and Thoroughbred Horses, based on the existence of vestiges of the 
lachrymal cavity in their skulls. 
Important contributions to the morphology of the Monotremata have 
been made in the continuation of the memoirs on Semon's Reise ; while 
Abel's investigations on the skeleton of extinct Sirenians are likewise 
of great value. The continuation of Scott's work on Tertiary Patagonian 
Mammals also demands mention. Two investigators, Carlssox and 
Sweet, have been independently working at the anatomy of Sotoryctes. 
Max Weber's " Saugethiere " is a most important text-book on the 
class ; while, from another point of view, the work on British Mammals 
by MiLLAis, of which the first volume has appeared during the year, 
likewise demands special recognition. Another valuable faunistic work is 
Elliot's Mammals of Central America. It is satisfactory to welcome 
the appearance of the first instalments of a supplement to Trouessart's 
" Catalogue " ; while Palmer's " Index Generum Mammalian " is an 
absolutely invaluable work. 
Ordinary descriptive work has progressed with the rapidity characteristic 
of recent years. 
The Record is considerably larger than its immediate predecessors, 
despite the omission of a number of articles which did not appear to 
the Recorder to be of any scientific importance. 
I. TITLES.* 
1. Abel, O. Die Sirenen der mediterranen Tertiarbildungen Oster- 
reichs. Abh. geol. Reichsanst. xix, pt. 2, pp. vi-f 223, 7 pis. [^Sirenia.'] 
2. . Ueber einen Fund von Sioatherium giganteum bei Adrianopel. 
Anz. Ak. Wiss. 1904, pp. 195 & 196, and SB. Ak. Wien cxiii, pp. 1-23, 
pi. [Giraffiydce. ] 
3. Aby, F. S. Observations on the blood-capillaries in the cerebellar 
cortex of young Cats. J. Neurology ix, pp. 26-34, pi, ii (1899). 
[Felidce.'] 
4. Aflalo, F. G. and others. The Sportsman's Book for India. London, 
pp. 567, illustrated. [Contains chapters on Big Game. J 
5. Aggozotti, a. L'echange respiratoire des Cobayes dans Fair rarefie. 
Arch. ital. Biol, xli, pp. 402-417. [Caviidop.] 
* Au asterisk prefixed to a quotation indicates that the Recorder has not seen 
the Journal or Work referred to. 
